"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 极致RTO-数据库系统类
Case Name   : 开启极致RTO，备机进行switchover过程中，备机异常退出后恢复，切换成功后，还原主备状态，关闭极致RTO，主备数据一致
Create At   : 2020/10/15
Owner       : @peilinqian
Description :
    1、开启极致RTO
    2、备机进行switchover
    3、备机数据库进程kill - 9；查询备机数据数据进程状态
    4、switchover失败，重启主备；
    5、查询主备状态
    6、备机再次进行switchover
    7、进行refresh
    8、查询主备状态
    9、新主机创建数据表，并插入数据
    10、还原主备，原主机进行switchover
    11、进行refresh
    12、执行完成后，关闭极致RTO
    13、查询主备数据是否一致
    14、执行TPCC
Expect      :
    1、开启极致RTO成功
    2、备机开始进行switchover
    3、备机数据库进程kill - 9；查询备机数据数据进程状态为空
    4、switchover失败，重启成功
    5、查询主备状态正常
    6、备机再次进行switchover成功
    7、进行refresh成功
    8、查询主备状态正常
    9、新主机创建数据表，并插入数据功能正常
    10、还原主备，原主机进行switchover成功
    11、进行refresh成功
    12、执行完成后，关闭极致RTO成功
    13、查询主备数据一致
    14、执行TPCC成功
History     :
    modified：2021-4-22 by 5328113;状态结果查询方式变更，修改脚本；
    modified：2021-3-9 by 5328113;主备同步方法调用修改，增加超时等待时间；
    modified：2021-2-5 by 5328113;guc参数还原时指定还原值
    modified ：2020-11-18 by @peilinqian ；完善TPCC断言；
    modified:2020-12-14;teardown增加主备异常恢复；
    modified ：2021-1-13 by @peilinqian ；
        进行switchover前增加主备同步校验；删除kill-9 断言；删除不必要tpcc操作
    modified ：2021-1-19 by @peilinqian ；
        进行switchover前增加主备同步校验；主备恢复时增加异常重建操作
    modified ：2021-1-27 by @peilinqian ；清理测试表数据
    modified:2021-1-28 by 5328113;删除start成功断言，删除不必要tpcc
"""

import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import *
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class ExtremeRto(unittest.TestCase):
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info(
            '----Opengauss_Reliability_RTO_Dbsys_Case024:初始化----')

        self.pri_root = Node(node='PrimaryRoot')
        self.pri_dbuser = Node(node='PrimaryDbUser')
        self.sta1_root = Node(node='Standby1Root')
        self.sta1_dbuser = Node(node='Standby1DbUser')
        self.sta2_dbuser = Node(node='Standby2DbUser')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.sta_1_sh = CommonSH('Standby1DbUser')
        self.sta_2_sh = CommonSH('Standby2DbUser')
        self.com = Common()
        self.constant = Constant()
        self.tpcc_path = macro.TPCC_PATH
        self.MAX_NUM = 10000
        self.table_test = 't_RTO_Dbsys_Case024'
        self.insert_sql = f'''drop table if exists {self.table_test};
                       create table {self.table_test}(id int);
                       begin 
                       for i in 1..{self.MAX_NUM} loop
                       insert into {self.table_test} values(i);
                       end loop;
                       end;'''
        self.select_sql = f'select count(*) from {self.table_test};'
        self.drop_sql = f'drop table {self.table_test};'
        self.node_num = self.com.get_node_num(self.pri_root)
        self.log.info(self.node_num)
        self.max_time = 1200
        self.min_time = 300

    def test_main(self):
        try:
            self.log.info('----1、开启极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'replication_type=1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=off')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----2、备机进行switchover----')
            switch_thread = ComThread(self.sta_1_sh.executeGsctl,
                                      args=('switchover',
                                            self.constant.SWITCH_SUCCESS_MSG,
                                            '',
                                            False))
            switch_thread.setDaemon(True)
            switch_thread.start()

            self.log.info('----3、备机数据库进程kill - 9；----')
            self.com.kill_pid_keyword('M standby', 9, self.sta1_dbuser)
            time.sleep(2)
            self.log.info('----查询备机数据数据进程状态----')
            db_process_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
            self.log.info(db_process_cmd)
            db_process_result = self.sta1_dbuser.sh(db_process_cmd).result()
            self.log.info(db_process_result)

            self.log.info('----4、switchover结果验证----')
            switch_thread.join()
            switch_result = switch_thread.get_result()
            self.log.info(switch_result)
            self.assertFalse(switch_result)

            self.log.info('----5、switchover失败，重启主备；----')
            is_stop = self.pri_sh.stopDbCluster()
            self.assertTrue(is_stop)
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----6、备机再次进行switchover----')
            success_msg = self.constant.SWITCH_SUCCESS_MSG
            switch_result = self.sta_1_sh.executeGsctl('switchover',
                                                       success_msg)
            self.assertTrue(switch_result)

            self.log.info('----进行refresh----')
            refresh_msg = self.sta_1_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----查看主备是否同步----')
            self.sta_1_sh.check_location_consistency('primary',
                                                     self.node_num,
                                                     self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----7、新主机创建数据表，并插入数据功能正常----')
            insert_result = self.sta_1_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.sta_1_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----8、还原主备，原主机进行switchover----')
            success_msg = self.constant.SWITCH_SUCCESS_MSG
            switch_result = self.pri_sh.executeGsctl('switchover',
                                                     success_msg)
            self.assertTrue(switch_result)

            self.log.info('----进行refresh----')
            refresh_msg = self.pri_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----8、还原主机创建数据表，并插入数据功能正常----')
            insert_result = self.pri_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.pri_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

        finally:
            self.log.info('----9、执行完成后，关闭极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=on')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            # 校验备机是否完成数据同步
            self.log.info('校验备机是否完成数据同步')
            flag_1 = self.sta_1_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_1)
            flag_2 = self.sta_2_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_2)

            self.log.info('----10、查询主备数据是否一致----')
            nodes_tuple = (self.pri_dbuser,
                           self.sta1_dbuser,
                           self.sta2_dbuser)
            flag = self.com.check_data_sample_by_all(r'\d', *nodes_tuple)
            self.assertTrue(flag)

            table_dict = self.com.format_sql_result(
                self.pri_sh.executDbSql(r'\d'))
            table_name = table_dict.get('Name')
            for name in table_name:
                select_sql = f'select count(*) from {name};'
                flag = self.com.check_data_sample_by_all(select_sql,
                                                         *nodes_tuple)
                self.assertTrue(flag)

    def tearDown(self):
        self.log.info("----this is tearDown----")
        host_name = self.pri_root.sh('hostname').result()
        if self.pri_sh.check_whether_need_switch(host_name):
            self.log.info('----恢复主备关系----')
            if self.pri_sh.check_whether_need_build():
                self.log.info('如果备机无法恢复，需要重建备机')
                self.pri_sh.executeGsctl('build',
                                         self.constant.REBUILD_SUCCESS_MSG)
            self.log.info('---进行主备切换---')
            success_msg = self.constant.SWITCHOVER_SUCCESS_MSG
            result = self.pri_sh.executeGsctl('switchover', success_msg)
            self.log.info(result)
            result = self.pri_sh.exec_refresh_conf()
            self.log.info(result)

        self.log.info('----清理测试表----')
        drop_result = self.pri_sh.executDbSql(self.drop_sql)
        self.log.info(drop_result)

        self.log.info('----校验刷脏页是否完成----')
        self.pri_sh.check_whether_remain_dirty_page()

        self.log.info(
            '----Opengauss_Reliability_RTO_Dbsys_Case024:执行完毕----')
